Innersole



Non B3, B923.

M. BROWN INNERSOLE Filed June l0 1921 Patented Nev. 113 i923 earnercasina.

MAX BBUWN, F BOSTON, MASSACHUSETTS.

INNOLE.

Application led June 10, 1921. aerial No. 476,465.

To all whom it may concern:

Be it known that l, MAX BROWN, a citizen of the United States, andresident of Boston, county of Suolk, Gommonwealth of Massachusetts, haveinvented an Improvement in lnnersoles, of which the followingdescription, in connection with the accompanying drawings, is aspecification, like characters A'on the drawings representing like partsin each of the several views.

Ylhis invention relates to innersoles of vshoes and boots and moreparticularly to an improved composite innersole produced of a plurality.of layers oi' specially selected materials. A. principal object ot theinvention is to provide an innersole that exhibits qualities of strengthand insulation against moisture and cold in a high degree while beinginexpensive and produced throughout of materials easily and cheaplyobtained. The foregoing and other objects and advantages of theinvention will more fully appear from the following detaileddescription, and the distinctive features of novelty will be pointed outin the appended claims.

Referring to the drawings:

Figure l is an elevation of an innersole embodying the invention withportions of the successive layers broken away to better show theinterior construction;

Fig. 2 is an edge view thereof; and

Fig. 3 is an elevation of the innersole.

ln carrying out the invention l provide two layers 10, 11, kof a lightor medium weight felt, preferably about atwenty pound grade. rlhese teltlayers are saturated with asphaltum or a like waterproof `cementitiousbinder and they are pressed together with an intermediate layer 12 ofstout burlap, the

to asphaltic coating ofthe felt la ers uniting firmly and strongly withthe bres of the -burlap To the -outer yside of the burla layer 10 isapplied a layer 13 of paper pre erably of a stout grade such as kraftpaper.

ce r[his constitutes the outer side ot the inner sole. To the surface ofthe felt layer 11 a fleece lining layer 14 may be applied. rll`hese 1aers when united and pressed together are allI held strongly by theadhesive bond of the' asphalt with which the felt layers 10, 11, areloaded, so that the innersole thus produced is a unitary mass, theseveral la, ers or lamin of which are strongly ad erent. Among theadvantages of the composite innersole thus produced, are that the burlapwith its stout crisscross threads imparts strength to hold the stitchingin the assembling of the innersole, while the telt layers provideinsulation against heat and cold, and the asphalt serves the doublepurpose of a cementitious binder and of providing complete insulationagainst moisture. 'llhe outer paper layer 13 protects the outer surfaceof the felt layer 10 and together with the eece lining 14 applied to theiayer 11, preventsany exposure of the asphalt coating as the innersolesare handled in the shoe shop. l am aware that the invention maybeembodiedin other specific terms without departing from 'the spirit oressential attributes thereo, and l therefore. desire the presentembodiment to be considered in all respects as illustrative and notrestrictive, reference being had to the appended claims rather than tothe foregoing description to indicate the scope of the invention.

nHaving described my invention, what l claim as new and desire to.secure by Letters Patent is:

1. An innersole comprising two asphaltsaturated layers of feltadhesively secured together with an intermediate loyer of burlap, toconstitute a composite unitary inneri sole.

2. An innersole comprising two telt layers loaded with waterproofcementitious binder and adhesively secured thereby with an intermediatelayer of strength giving burlalp or the like.

3. n innersole comprising a plurality o layers ofelt loaded withwaterproof cementitious binder adhesively secured with an intermediatelayer of strength giving burlap, and with protective layers applied tothe outer surfaces ot said felt layers.

ln testimony whereoi', l have signed my name to this specilication.

BRWN.

